A remoteproc could theoretically signal handover twice. This is unexpected
and would break the reference counting for the handover resources (power
domains, clocks, regulators, etc), so add a check to prevent that from
happening.
Signed-off-by: Stephan Gerhold <stephan.gerhold@xxxxxxxxxx>
---
drivers/remoteproc/qcom_q6v5.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/remoteproc/qcom_q6v5.c b/drivers/remoteproc/qcom_q6v5.c
index 769c6d6d6a731672eca9f960b05c68f6d4d77af2..58d5b85e58cdadabdd3e23d39c06a39196c3a194 100644
--- a/drivers/remoteproc/qcom_q6v5.c
+++ b/drivers/remoteproc/qcom_q6v5.c
@@ -164,6 +164,11 @@ static irqreturn_t q6v5_handover_interrupt(int irq, void *data)
{
struct qcom_q6v5 *q6v5 = data;
+ if (q6v5->handover_issued) {
+ dev_err(q6v5->dev, "Handover signaled, but it already happened\n");
+ return IRQ_HANDLED;
+ }
+
if (q6v5->handover)
q6v5->handover(q6v5);
--
2.50.1
